Vibrations - Ultrasonic Industry Association

More documents

Recommendations

Info

New New Products Products Advanced Advanced Control Control Systems Systems for for Ultrasonic Ultrasonic Ultrasonic Seam Seam Welding Welding Wilmington, MA…Stapla Ultrasonics announces its RST and RSK systems for seam welding metal sheets and welding sheet metal and foils to tubing in the manufacture of heat exchangers, solar collectors, and other applications. One specific high-volume production example is welding copper fins to copper tubes. In the RST system, the welder moves down a track to seam weld stationary material. In the RSK system, reelfed stock is continuously welded as it passes under the ultrasonic welder. The RST system is designed for ultrasonically welding pre-set lengths. The system is modular and can be extended to make continuous welds up to 12 meters in length. The welding unit moves down a linear track with weld speeds of up to 24 feet/min. (8 meters/min.). Pneumatic clamping brackets are provided to handle tubes of 0.23- to 0.6-inch (6- to 15-mm) diameters as well as foil and sheet metal in widths up to 7.8 inches (200mm). - - - 6 6 6 - - - The RSK system by Stapla is designed to remain stationary while both the tube and foil material are fed in a precisely synchronized process. The RSK can weld tubes of 0.23- to 0.6-inch (6- to 15-mm) diameter as well as foil and sheet metal in widths up to 7.8 inches (200 mm). Both the RST and RSK systems are equipped with Stapla’s ST 3000 controller to continuously monitor key welding parameters, including compression, to maintain consistent weld quality over the length of the seam. The monitor features a large LCD screen that displays both numerical settings and 3-D schematics of key components to help operators set, store, and retrieve up to 1,000 weld settings without reprogramming or tool change. Designed to support high production rates and sequential operations, the controller communicates all necessary preventive maintenance information to the operator and signals when there is a problem caused by materials handling equipment or any variance in the parts being welded. Custom tooling for manual and automatic manufacturing is available to provide customers with integrated seam welding solutions to reduce costs and improve manufacturing yields. For complete information contact: Stapla Ultrasonics Corporation at 375 Ballardvale Street, Willmington, MA 01876, Telephone: 978/658-9400, Fax: 978/658-6550, email: info@staplaultrasonics.com.
In In the the News News EWI EWI EWI EWI EWI Workshop Workshop Workshop Workshop Workshop on on on on on Ultrasonics Ultrasonics Ultrasonics Ultrasonics Ultrasonics Applied Applied Applied Applied Applied to to to to to Metallurgy Metallurgy Metallurgy Metallurgy Metallurgy and and and and and Manufacturing Manufacturing Manufacturing Manufacturing Manufacturing Draws Draws Draws Draws Draws Strong Strong Strong Strong Strong Interest Interest Interest Interest Interest On June 12-13, EWI, in cooperation with leading research institutes in Russia and Ukraine, and other partners presented a workshop on innovations in “High Power Ultrasonics Applied to Metallurgy and Manufacturing” at EWI in Columbus. Based on the fact that intense levels of ultrasonic energy, when applied to materials and processes, can have a wide range of dramatic effects, including changing materials, accelerating processes, and improving manufacturing operations, the workshop drew attendees from several areas of manufacturing and from the ultrasonics industry. Although it was known that researchers in Russia and Ukraine have been world leaders in the application of high power ultrasonics to a wide range of industrial operations ranging from casting to metal forming, the transfer of these technologies to industries in North America has not been rapid. It was the purpose of the workshop to accelerate this process, focusing on selected technologies in metallurgy and manufacturing. The workshop featured several of the scientists who have led many innovations in metallurgy and manufacturing, doing both the basic research that developed the technologies and overseeing practical application in manufacturing environments. Speakers included Dr. Oleg Abramov of the Institute of General and Inorganic Chemistry, Moscow; Dr. George Prokopenko of the Institute of Metal Physics, Kiev; Drs. Oleg Gradov and Vladimir Abramov of the Centre of Applied Acoustics, Moscow; and Dr. Yuri Kudryavtsev of ITL, Toronto. These international speakers were joined by Dr. Mani Mina of Etrema, Ames, Iowa and Dr. Karl Graff, Workshop organizer, of EWI. The workshop provided a brief overview of the fundamentals of high power ultrasonic technology, with special attention being given to the very high power ultrasonic systems that have been developed in Russia and Ukraine to drive various processes. Dr. Mina provided an overview of the new, very powerful Terfenol-D-based, 6-kW transducer manufacturing by Etrema. Five key technologies were presented. The first discussed was molten metal processing, where it was shown how high power ultrasound can profoundly influence molten metals at several stages of their production and use, including degassing of the melt, structural refinement of ingots and castings, preparation of as-cast composites, improved crystal growth and zone refinement, and atomization of the melt for powdered metal production. - - - 7 7 7 - - - A second area was that of surface treatment and cladding. Russian and Ukrainian researchers have developed innovative approaches, involving ultrasonic impact, for surface-hardening manufactured parts. Other innovations described related to use of high power ultrasound for application of cladding to wires, thin strips, and surfaces. A third area was that of weld treatment, where use of ultrasonic impact technology is used to modify the surface and near-surface properties, including weld contour, of fusion welds. The next area covered was metal forming and deformation. Researchers in the Ukraine have focused on the effects of intense ultrasound in changing the plastic flow of materials in forming and cladding. Based on what they term the “acoustoplastic effect,” the applications of this innovative technology to wiredrawing and manufacture of thin ribbons and foils was covered. This was a special session given by Dr. Prokopenko in memory of Dr. Kozlov, the originally scheduled speaker who had died shortly before the workshop. Dr. Prokopenko’s discussion covered mechanical alloying with the help of ultrasonics, including alloying of metal surfaces by ultrasonic treatment and mechanical alloying of powder materials. The fifth area covered was that of ultrasonic metal welding, an area of specialization of EWI. Dr. Graff reviewed the basic technology of the field and then noted recent developments in higher power systems and increased applications for structural purposes. The discussions concluded with an overview of other industrial applications of high power ultrasonics, including machining, heat treatment, preparing in-situ composites, and chemical process enhancement. Several periods of laboratory demonstrations were interspersed throughout the two-day workshop. Because of its extensive capabilities in applications of high power ultrasonics in materials joining and other processes, EWI was pleased to host this successful workshop and is considering a second event next year. For more information on workshop content and presentations and on exploring various applications highlighted at the workshop, contact Karl Graff at EWI (tel. 614-688-5269 or karl_graff@ewi.org).
Page 1 and 2: Vibrations Vibrations News from the
Page 3 and 4: Sponsorship Sponsorship & & Adverti
Page 5: - - - 5 5 5 - - -
Page 9 and 10: Memorial Memorial H. H. Philip Phil
Page 11 and 12: President’s President’s Message

Vibrations - Ultrasonic Industry Association

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?